One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,9)(4,12)(5,7)(6,11)(8,14)(10,15)(13,16)(17,18,21,22)(19,25,27,23)(20,24,28,29)(26,31,32,30)(33,34,39,38)(35,42,41,37)(36,40,44,46)(43,48,47,45)(1,3,5,11)(2,6,7,9)(4,13,14,10)(8,16,12,15)(18,22)(23,25)(24,29)(30,31)(36,44)(40,46)(43,47)(45,48)(2,7)(6,9)(8,12)(15,16)(17,18)(19,23)(20,24)(21,22)(25,27)(26,30)(28,29)(31,32)(33,35)(34,37)(36,43)(38,42)(39,41)(40,45)(44,47)(46,48) involution — undirected(1,3)(2,6)(4,10)(5,11)(7,9)(8,15)(12,16)(13,14)(17,18)(19,23)(20,24)(21,22)(25,27)(26,30)(28,29)(31,32)(33,36,39,44)(34,40,38,46)(35,43,41,47)(37,45,42,48)(1,4,5,14)(2,8,7,12)(3,10,11,13)(6,15,9,16)(17,19)(18,23)(20,26)(21,27)(22,25)(24,30)(28,32)(29,31)(33,37,39,42)(34,41,38,35)(36,45,44,48)(40,47,46,43)(1,2)(3,6)(4,8)(5,7)(9,11)(10,15)(12,14)(13,16)(17,20,21,28)(18,24,22,29)(19,26,27,32)(23,30,25,31)(33,38,39,34)(35,42,41,37)(36,46,44,40)(43,48,47,45)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.